package com.zks.second.server;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.util.CharsetUtil;

//标示channelHandler 可以被多个channel 安全的共享
@ChannelHandler.Sharable
public class EchoServerHander extends ChannelInboundHandlerAdapter {
    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        ByteBuf in=(ByteBuf)msg;
        System.out.println("server received:"+in.toString(CharsetUtil.UTF_8));
        ctx.writeAndFlush(in);
    }

    @Override
    public void channelReadComplete(ChannelHandlerContext ctx) throws Exception {
       // ctx.writeAndFlush(Unpooled.EMPTY_BUFFER).addListener(ChannelFutureListener.CLOSE);
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        cause.printStackTrace();
        ctx.close();
    }

    @Override
    public void channelInactive(ChannelHandlerContext ctx) throws Exception {
        System.out.println("客户端关闭");
        super.channelInactive(ctx);
    }
}
